Liquid-measurer.



C. C. ALLEN. LIQUID MEASURER. APPLIUATION FILED Dsc. 8.1908.

Patented Nov. 9, 1909.'VY

witnesses,

CHARLES e. ALL-EN', or xANsAs entr, ivrrssonnr.

LIQUID-MEASURER.

Specification of Letters Ratent.

Patented Nov. 9, 1909.

.ApplicationV filed December 8, 1908. Serial No. 466,544.

To all wom 'it may concern:

Be it known that I, CHARLES C. ALLEN, a citizen of the United States of America, residing at Kansas City, in the county of J ackson and State of Missouri, have invented certain new and useful Improvements in Liquid-Measurers; and l do hereby declare that the following is a full, clear, and exact description of the invention, such as will enable others to make and use the same, reference being had to the accompanying drawings, forming a part of this specification.

The invention relates particularly to measf ures for discharging from a body of the liquid of equal minute quantities.

The object of the invention is to displace the exact quantity, step by step, and with great facility, and withoutY the quantities varying.

The invention consists in the novel con-` struction and combination of parts, such as Y will be first fully described and'themspecifically pointed out in the claims.

Figure 1. is a side view, in elevation, of the liquid measuring instrument. Fig. 2. isY a vertical, sectional view of the same. Fig. 3. is a detail, side view of the liquid holding tube and sleeve, with the upper end broken away, to show the stopper or diaphragm. Fig. 4. is a top view of the instrument with the plunger being broken away. Fig. 5. is a detail isometric view of the sleeve on the liquid holding tube, enlarged.

Similar numerals of reference indicate corresponding parts in all the gures of the drawing Referring to the drawings, 7 indicates a liquid-holding receptacle which is in the form of a tube, and for the purpose of containing acids and other liquids is preferably made of glass. Upon the upper end of the tube is a close-fitting sleeve 8, which is short in length and secured to the tube by suitable adhesive substances, such as cement.

Upon the outer surface of the sleeve and near the lower end thereof, is an outwardly extended annular flange 9, formed integral with the sleeve. Upon the lower end of the tube is an inwardly extended portion 10, forming the bottom of the tube, and upon the outer surface of said portion is a short projection 11, the surface of which is gradually reduced or tapered nearly to a point. Through said bottom portion 10 of the'tube and the projection 11 extends a small capillary discharge opening 12. In the upper sh ort distance.

end of the tube 7 is a close-fitting, movable .diaphragm or stopper 13, which is made ofv .suitable material, such as cork.

The tube 7 is filled with theY liquid and the stopper inserted in the upper end of the tube to a position in which the outer surface of the stopper is upon a line with said upper portion of the tube.

The means for advancing the stopper and discharging a measured quantity of the liquid consists of a holow member or casing 14, of the proper length and thickness and upon the outer surface of the casing at an intermediate point relative to the ends of the casing is an annular enlargement 17, for the hand of the operator. In the lower portion 16, of the casing, is an opening 18,

of the requisite size to admit of the entrance of the upper end of the sleeve 8, above the flange 9, the upper surface of which flange Vcomes intoV contact with the lowerY end portion 16, of the casing. In the upper portion of the casing is an opening v19, the size Lof which is the same as the inner circumfer i ence of the tube 7. Upon the outer surface of the lower end pertion 16, of the casing,

vis a screw-thread portion 19", extending downwardly from the line of the lower surface of the enlargement 17, of the casing a To this screwthread portion of the casing is fitted a collar 2), upon the inner surface and upper end portion of which collar is a screw-threaded portion 21, which is turned upon the threads 18, of the sleeve, the lower, inner portion of the collar 4fitting the lower smooth portion of the sleeve. The outer surfaceef collar is milled. The lower end of the collar 2O extends down- Jwardly a short distance below the line of the lower end of the sleeve16, and alse a short distance below the lower portion of flange 9, in the sleeve 8, and is bent inwardly at 22, and in close contact with the lower i portion of said sleeve S, leaving between said the stopper' 13, in the tube 7.- The lower end portion 28X, of the rod which forms the plunger is nearly of the same size as the inner circumference of the opening 19, in the upper portion 15, of the casing 14k, and is approximately two-thirds the length of said portion of the casing. The upper end ortion of the rod is reduced in size, anc is nearly of the circumference of the opening 26, in the cap 25, of the casing 14;. This rod is made of considerable length suflicient to extend within the tube 7, to the lower end thereof, and is provided with a removable cap 29, secured to the rod by a screw 29X.

Upon the rod 28, are secured a number of lugs or pins 30, arranged at equal distances apart and in vertical series, the lugs upon one side of the rod alternating in position with the lugs upon the other portion or side of the rod transverse thereto, the lugs in the same vertical plane being opposite the other.

`The lugs are made to pass readily through the radial openings 27, in the cap 25, when the rod is adjusted in position by a partial rotary movement `communicated to the rod. The distance between the lower surface of .one lug in one vertical series of lthe lugs and the lower surface of the adiacent lug m the other vertical series 'constitutes a measure of the liquid to be discharged in a specific quantity and the lugs are therefore placed on the rod with 'the determinate distances accurately computed.

In the employment of the instrument for the purposes premised, the lower end portion 28X, of the rod 28, as seen in Fig. 2, bears upon the upper surface of the stopper 18. Rotation is first imparted to the rod 28 suihcient to cause two of the lugs 30, 30, upon opposite sides of the rod, to come in position above the radial openings 27, 27, in the cap 25, and pressure being imparted to the rod the lugs pass within radial openings advancing the stopper 13, until the lugs 80, transverse thereto come into contact with the cap 26, thus directing the movement of the rod. The stopper 13 in its pressure downwardly upon the liquid expels a small quantity of the liquid through the capillary discharge opening 12, and upon a rotary movement imparted to the rod 28 to bring one pair of the lugs 30 over the openings 27,

Voperating to repeat the movement and an equal quantity of the liquid is discharged through the capillary discharge opening 12, in the lower end of the tube, equal to the measure pre-determined by the distance between the lower surfaces of the lugs in the transverse, vertical planes of rod 28, and step by step. In this manner the liquid is discharged with facility with no variance in the quantity.

It :is customary to fill a number of the tubes with the liquid and aflix the sleeve thereto, and `after use the tubes maybe dis carded. The lugs' 30, which are shown round, may be varied in form, as preferred;

Having fully described my invention,- whatI now claim as new and desire to se; cure by Letters Patent is:

1. In liquid measurers the combination with a receptacle or container of liquids having a capilla-ry discharge opening, a movable diaphragm adapted to displace said liquid in small quantities, a casing, connecting means connecting said casing with said receptacle, and a plunger within said casing coacting with the diaphragm to move said diaphragm within the receptacle, and measuring devices on the plunger for deter- .mining the amount of liquid vdisplaced by the movement of the diaphragm.

2. In liquid measurers, the combination with a tube for holding the liquid having an `opening in its upper end, and a capillary discharge opening, a movable diaphragm adapted to displace the liquid in small quantities, a casing having an opening `in its lower end registering with the opening in the upper end of said tube, means connecting said tube with said casing, and a plun- `ger within said casing, a plunger rodand measuring devices on the said rod adapted to co-act with and control the Vmovement of said plunger.

3. In liquid measurers the combination with a tube for holding the liquid having an opening in its upper end and a capillary discharge opening, a movable diaphragm within said tube adapted to displace the liquid in small quantities, a casing having an opening in its lower end registering with the opening in the upper end of said tube, said casing having an opening in its upper end, a plunger within said casing, co-acting with the diaphragm, and a plunger rod, and measuring devices on the `plunger rod, controlling the movement of the plunger.

4. In liquid measurers the combination with a tube for holding the liquid having an opening in its upper end, and a capillary discharge opening, a movable. diaphragm within said tube adapted to displace the liquid in small quantities, a casing having an opening in its lower end registering with the opening m the upper end of said tube and an opening in the upper end Lof said casing having radial openings extending therefrom, means connecting said tube with said casing, and a plunger within the said casing, a plunger-rod movable in the opening in theupper end of said casing, and lugs on said rod arranged at measured distances and adapted to move with said rod through said radial openings.

5. In liquid measurers the combination with a tube for holding lthe liquid having an opening in its upper end, and a capillary discharge opening, a movable diaphragm within said tube adapted to displace the liqopening regis-tering with tenpenng upper end of Sam tube, sald casrng havrng an openlng 1n the upper end of Said casrng,

, and radial openings extending therefrom n opposite directions, a plunger Within said easing' adapted to co-act with the diaphragm in said tube, and a rod Within said opening in the upper end of said casing conrod in vertea series; and the bags in oner serles alternating' in posltlon Wlth the lugs 1n the other serles and spaced at measured distances apart.

CHARLES C. ALLEN. Vtnesses EDWARD E. NABER, HARRYY L. GREEN.- 

